The KBK requires geotechnical investigations in order to be able to take the results of these investigations into account as a basis for the tendering of these construction measures. The scope of these construction measures consists of sections 2 to 10, each with a section length of up to 60 m and channel depths of 2.00 to 5.00 m. In the technical specification, approximately 10 construction measures were estimated, depending on the only roughly foreseeable need for new channel construction in the sewer network. Furthermore, approximately 3 accompanying geotechnical investigations were taken into account in the technical specification.